Flower from grandparent upon retirement (4)
I believe the answer is:
lava
This could be a double definition.
'flower from grandparent' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'retirement' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'upon' is the link.
Can you help me to learn more?
(Other definitions for lava that I've seen before include "Immature insect form" , "Volcanic flowing rock" , "Volcano output" , "Volcanic outpouring" , "Flowing extrusive magma" .)